when you or someone farts around a person drinking water. the water is automatically considered fart water. this is because water evaporates and also gets tainted by the air. the water is usually not always no less good.
*person A farts and contaminates the surrounding air with their gas*
*person B takes a drink of water with their mouth wide open*
*person A says: "haha you just drank fart water!! HAHAHA"*
*person B swallows carelessly"
A rather sexual fetish in which a very small cabal of goofy disgusting losers with nothing else better to do but watch a woman passing gas over a cake and masturbate to it enthusiastically. So sick and perverted, that even sexologist Dan Savage came out against it in his weekly column.
Danielle:I am into Fart Fetishism so much I have just farted on a cake.
John: Oh, well, it seems like you have a rather strong case of Fart Fetishism.